Ashly Power Amplifiers FET-200 - Manual (Page 13)

SIBILANCE
The distortion caused by loud high frequency signals, such as the
"Ssss..." sounds in human speech.
SHELVING
Describes an equalization action where all frequencies above or below a
particular frequency are boost or cut.
SLOPE
In a filter or equalizer, a description of the rate of boost or attenua­
tion. Usually specified in dB/octave (6, 12, 18, and 24dB/octave slopes
are most common). The steeper the slope, the higher the "Q" in a filter.
THRESHOLD
An arbitrary signal level, above which a limiter or noise gate activates.
TRANSIENT
A sudden burst of energy in an audio signal, such as a breath blast in a
microphone, the sound of a snare drum, or a deep scratch in a record.
Transients frequently reach peak levels of 10 to 30 dB above standard
operating level, and may cause distortion or even damage to equipment.
UNITY GAIN
Output level = Input level.
VGA
Voltage Controlled Amplifier. An amplifier capable of both gain and
loss, controlled by a variable DC voltage.
WIRING, PHONE PLUG AND XLR
A stereo phone plug is wired + to the tip, - to the ring, and shield to
the sleeve. For a mono phone plug, combine - and shield, and connect both
to the sleeve.
An XLR (3 Pin) connector is wired + to pin 3, - to pin 2, and shield to
pin 1.
Sleeve
Mono Phone Plug:
(for unbalanced
inputs and outputs)
Stereo Phone Plug:
(for balanced in­
puts and outputs)
Tip
Sleeve Ring
\ /
XLR Type Connector:
(Male Shown)
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